# HG changeset patch
# User HIROSE Yuuji <yuuji@gentei.org>
# Date 1635171293 -32400
# Node ID 3891edb19b0bd1ab74c991b5d73f03129ccdfd00
# Parent  b8d09525a0b410d6815b5ffc9f50d7fa1e81bd5b
Reference error fixed

diff -r b8d09525a0b4 -r 3891edb19b0b s4-main.js
--- a/s4-main.js	Mon Oct 25 23:00:23 2021 +0900
+++ b/s4-main.js	Mon Oct 25 23:14:53 2021 +0900
@@ -176,7 +176,7 @@
 	    }, 100);
 	    cnt++;
 	}
-	if (MathJax.typesetPromise) {
+	if (MathJax && MathJax.typesetPromise) {
 	    MathJax.typesetPromise(); // MathJax v3
 	}
 	console.log("Update "+cnt+"rows");